Electric-line fuse.



No. 869,060. PATENTED OCT. 22 1907.

P. B. COOK.

ELECTRIC LINE FUSE.

APPLICATION FILED 0GT.8.1906.

. 4 to accommodate the fuse wire extending from the tube FRANK B. COOK,OF CHICAGO, ILLINOIS:

ELECTRIC-m FUSE.

Specification of Letters Patent.

Patented Oct. 22, 1907.

.Application filed October 8, 1906. Serial No 338,037.

To all whom it may concern:

Be it known that I, FRANK B. Coox, a citizen of th United States ofAmerica, residing at Chicago, in the county of Cook and State ofIllinois, have inventeda new and useful Electric-Line Fuse, of which thefollowing is a specification", reference being had to the accompanyingdrawings illustrating same.

y invention relates to fuses for electrical circuits and apparatus, andmore particularly to such fuses of the inclosed type. i p

The principal objects of my invention are to pr'ovide improved terminalsfor such a fuse, which are made of sheet metal; and to construct one ofthe saidterniinals so that the fuse will lie substantially parallel withthe line wire when in service on same. be apparent from the followingspecification.

Figure 1 is a side elevation of the improved fuse of my invention; Fig.2 is a bottom view of Fig. 1., showing the fuse in service on a linewire; Fig. 3 is a left end view of Fig. 1; Fig. 4 is a side elevation oftermiualcap. 3; and Fig. 5 is a cross-sectional view of terminalcapvided with a hole 2 therethrough through which the fuse wire extends.One end of tube 1 is provided with a terminal cap 3 preferably formedof'sheet-metal and forced on the tube 1 under considerable pressure sothat it cannot be readily pulled off. Terminalcap 3 is first formed as aplain thimble, out of a flat disk of sheetmetal, the spindle portion4'thereon being then drawn down to size and threaded to accommodate nuts5 5. This construction provides a hole through the portion 1, which issoldered to the portion 4 at ti, the solder completely closing theopening in 4. Between the inner nut 5 and the cap portion 3, is placed awasher 7, between which and the portion 3 is clamped line eonductor 8.The other end of tube 1 is provided with a terminal cap 9 also formed ofsheet-metal and placed upon tube 1 in amanner similar to cap 3. Terminal9 is first formed as a plain thinible, out of a flat disk ofsheet-metal. the plate-like portion 10 being then formed on cap 9 bysimply pressing a portion of the thimble together. The portion 10 ispreferably formed off of center so as to permit the fuse wire to extendthrough a hole in the center of the end of cap 9 and be soldered theretoat 1]. the solder completely closing the hole in the end of cap 9.

The portion 10 is provided with a groove 12 along one edge thereof,substantially parallel with tube 1, to accommodate the line wire 13 whenthe fuse is put in service. A bolt 14 extends through the center of theOther objects will I portion 10 and carries a washer 15 provided with agroove 16 near one edge thereof to coincide with groove 12, the washer15 being preferably the same general form as the portion 10. The linewire 13 is clamped between the portion 10'and washer 15, in thegrooves12 and 16, the fuse as a whole preferably hanging underneath the linewire 13 when properly installed. The bottom edge of the portion 10 isprovided with a rib .17 extending therealong, against which the washerl5 bears so as to enable it to more firmly bear against the line wire13, the two places of bearing on the washer 15 being at 16 and 18. Thewasher 15 is preferably cut away at 19 to accommodate the solder fuseconnection at 11.

The circuit through the fuse is from line wire 13 through terminal plate10 and washer 15, fuse wire in opening 2, terminal 3 and line conductor8, to any suitable instrument. or circuit.

It will be readily seen that the fuse of this invention is veryconvenient to use, as it extends substantially along the line wire andhence does not interfere with other conductors or parts, as it would'ifit extended perpendicularly to the line wire 13 as is the usualpractice.

Forming the fuse terminal 3 of sheet-metal, and threading the smallerportion 4 thereof, greatly simplifies the manufacture of such terminalsand therefore cheapens their cost. I

I do not wish to limit this invention to the exact details ofconstruction as herein shown, as modifications 'may be made thereinwithout. departing from the scope of the invention.

1 \Vhat I claim as my invention and desire to secure by Letters Patentis:

fuse of the character described, comprising a tube having a small boretherethrough for carrying the fusible conductor, a terminal cap for thetube formed as a tliirnble from a single piecemf sheet-metal, a portionof the said thimble being flattened in a plane parallel with thelongitudinal axis of the fuse and off of center of the fuse where by thefusible conductor may extend out of the center of the end of the.thimhle in line with the small bore in the tube, a groove along one edgeof the flattened portion substantially parallel with the said axis. abolt. extending .through the said flattened portion, a washer carried bythe said belt for clamping a conductor in the said groove and being inshape and size substantially the same as the said flattened portion. anda recess in the said washer to accommodate the said fusible conductorwhere it extends out through the end of the thimble, and allow it to bereadily secured to the hitter.

As inventor of the foregoing I hereunto subscribe my name in thepresence of two subscribing witnesses, this 6th day of Oct. 1906.

FRANK B. COOK.

Witnesses .lso. F. TOMIKINS, FREDERICK R. PARKER.

